## Trigonometry (11th Edition) Clone

The functions that can have a y-value of $2$ are: tangent, cotangent, secant and cosecant.
RECALL: (1) The range of the sine and the cosine functions is $[-1, 1]$. (2) The range of the tangent and the cotangent function is $(-\infty, +\infty)$. (3) The range of the secant and the cosecant function is $(-\infty, -1] \cup [1, +\infty)$. Thus, the functions that can have a y-value of $2$ are: tangent, cotangent, secant and cosecant.